Download Chemical Equilibrium - Survey of Chemistry I - Slides | CHEM 1151K and more Study notes Chemistry in PDF only on Docsity! 1 Chapter 9 Chemical Equilibrium 9.1 Rates of Reactions General, Organic, and Biological Chemistry 2 Collision Theory of Reactions A chemical reaction occurs when collisions between molecules have sufficient energy to break the bonds in the reactants molecules collide with the proper orientation bonds between atoms of the reactants (N2 and O2) are broken and new bonds (NO) form General, Organic, and Biological Chemistry Copyright © 2010 Pearson Education, Inc. 5 Reaction Rate and Temperature Reaction rate is the speed at which reactant is used up is the speed at which product forms increases when temperature rises because reacting molecules move faster, thereby providing more colliding molecules with energy of activation General, Organic, and Biological Chemistry Copyright © 2010 Pearson Education, Inc. 6 Reaction Rate and Concentration Increasing the concentration of reactants increases the number of collisions increases the reaction rate General, Organic, and Biological Chemistry 7 Reaction Rate and Catalysts A catalyst speeds up the rate of a reaction lowers the energy of activation is not used up during the reaction General, Organic, and Biological Chemistry 10 Solution State the effect of each on the rate of reaction as: I) increases D) decreases N) no change A. (I) increasing the temperature B. (D) removing some of the reactants C. (I) adding a catalyst D. (D) placing the reaction flask in ice E. (I) increasing the concentration of a reactant General, Organic, and Biological Chemistry Copyright © 2010 Pearson Education, Inc. 11 Learning Check Indicate the effect of each factor listed on the rate of the following reaction as I) increases, D) decreases, or N) none: 2CO(g) + O2(g) 2CO2 (g) A. raising the temperature B. removing O2 C. adding a catalyst D. lowering the temperature General, Organic, and Biological Chemistry Copyright © 2010 Pearson Education, Inc. 12 Solution Indicate the effect of each factor listed on the rate of the following reaction as I) increases, D) decreases, or N) none: 2CO(g) + O2(g) 2CO2 (g) A. (I) raising the temperature B. (D)adding O2 C. (I) adding a catalyst D. (D) lowering the temperature General, Organic, and Biological Chemistry Copyright © 2010 Pearson Education, Inc.
